Ludwig Hofmann
15Patents
7h-index
4Co-inventors
59Inventor score
Filing activity: Apr 7, 1978 → Jan 22, 2002
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6157092A | Method and circuit configuration for voltage supply in electric function units | Electricity | 52 | Expired |
| US4154427A | Ratchet device for belts or ropes | Emerging Cross-Sectional Technologies | 28 | Expired |
| US6950681B2 | Transmission of data by ultrasound | Electricity | 24 | Expired |
| US6642754B1 | Clock signal generator employing a DDS circuit | Physics | 17 | Expired |
| US5867781A | Mobile radiotelephone system and broadcast station | Electricity | 15 | Expired |
| US6728234B1 | Method and apparatus for using a low clock frequency to maintain a time reference governed by a high clock frequency | Emerging Cross-Sectional Technologies | 13 | Expired |
| US7095985B1 | Radio transmitter and receiver | Electricity | 10 | Expired |
| US6311241A | Method and configuration for transferring programs | Electricity | 6 | Expired |
| US5385328A | Control valve | Physics | 5 | Expired |
| US6104252A | Circuit for automatic frequency control using a reciprocal direct digital synthesis | Electricity | 4 | Expired |
| US6112066A | Mobile radio set and method of determining the reception field strength | Electricity | 4 | Expired |
| US6477371B1 | Method and configuration for transmitting data | Electricity | 2 | Expired |
| US6163232A | Frequency/phase modulator using a digital synthesis circuit in a phase locked loop | Electricity | 2 | Expired |
| US4642574A | Digital quartz-stabilized FM discriminator | Electricity | 1 | Expired |
| US6456834B1 | Mobile radio set for operation in a TDMA system | Electricity | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.